addict

Here I thought snails were just cute little creatures that liked to dine in my vegetable garden. You can imagine my surprise to learn there are also carnivorous snails....with venom. New research shows that conotoxin, isolated from cone snail venom, can numb pain. Conotoxin is also reportedly 100 times more potent than morphine at treating chronic nerve pain. The added benefit is that it does not appear to be addictive. The snail to the rescue is the marine carnivorous cone snail common to the Indian Ocean and western Pacific. It hunts by stabbing prey and injecting a venom that paralyzes…
Recently, a discussion has sparked on ScienceBlogs over how the word "addiction," could be used to describe some substances that aren't necessarily harmful such as antidepressants. Scicurious from Neurotopia points out that if a substance changes one's physical self, there will be physical effects if that drug is discontinued—a property of addiction. Likewise, PalMD from Denialism Blog suspects the negative nature of the word "addiction" may make drug companies hesitant to describe their products as such, even though it's accurate.